CN1033371A - The method of sewage being carried out a biological disposal upon with multistage submerged trickling filters - Google Patents
The method of sewage being carried out a biological disposal upon with multistage submerged trickling filters Download PDFInfo
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- CN1033371A CN1033371A CN87108241A CN87108241A CN1033371A CN 1033371 A CN1033371 A CN 1033371A CN 87108241 A CN87108241 A CN 87108241A CN 87108241 A CN87108241 A CN 87108241A CN 1033371 A CN1033371 A CN 1033371A
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- flow direction
- drainage flow
- multistage
- sewage
- trickling filters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present invention relates to the method that multistage submerged trickling filters that a kind of employing is suitable for the nitride oxidation carries out biological sewage treatment.In the method, drainage flow direction to be clean is made inverse change every now and then.Like this, both utilize the advantage of the multistage submergence dripping and filtering system that vertically flows, eliminated the shortcoming that it had again.Drainage flow direction inverse change back and forth can all obtain the high concentration of bacterial groups that makes the nitrogen oxidation in the container.After the drainage flow direction changed, the bacterium that last operating mode is in starvation had obtained competent matrix supply.So both can make the total system nitrification efficiency higher, and existing relatively treatment process has improved process stability greatly.
Description
The present invention relates to the method that multistage submerged trickling filters that a kind of employing is suitable for the nitride oxidation is carried out a biological disposal upon to sewage.
This method is known, as being disclosed by stone moral prospectus DE 3117805 A1.Most important foundation is the activity of enzyme and the relation of substrate concn for such multilevel device.Only when substrate concn is enough high, could obtain high substance metabolism speed.In a kind of multilevel device, high nutrient supply amount is arranged in what container at first, speed of response is faster arranged thereupon.In contrast, the activity of substrate concn and enzyme correspondingly is all low in the last step of streamwise or what container.Compare with the situation that is full of onesize low nutrient concentrations in the full mixing system everywhere, the matrix gradient that occurs in this multilevel device can make the basic substance metabolism very fast, so purification efficiency is higher.
The shortcoming that present this multistage submerged trickling filters occurs in actual motion is: because substrate concn is low in last step or what container, respective substance basal metabolism is slow therewith, thereby bacterial growth is also slow.The result in the end on one or several microbial film bacterial concentration low, this at first causes nitrated insufficient.
Task of the present invention is to improve the nitrification efficiency that this paper begins the described method of part.
The technical scheme that solves this task is to make by the drainage flow direction of submerged trickling filters to make inverse change every now and then.
According to a kind of improvement of the present invention, the drainage flow direction is periodically carried out inverse change.
The another kind of improvement of the present invention is that the drainage flow direction is only made inverse change in indivedual several vessels of multistage submerged trickling filters.
Also can make the drainage flow direction in the last several vessels of this multistage submerged trickling filters, make inverse change at last.
Advantage of the present invention especially is: utilize the advantage of the multistage submergence dripping and filtering system that vertically flows and eliminated shortcoming above-mentioned.Flow direction inverse change back and forth can make all containers all reach the high concentration of bacterial groups that makes the nitrogen oxidation.The bacterium that is in " hunger " state during a certain operating mode of run duration has just obtained competent matrix in the drainage flow direction after oppositely and has supplied with.In system, there is high bacterial concentration can make total system that higher nitrification efficiency is arranged on the one hand on all biological film, under the sewage quality changing conditions, compares the stability that has improved process greatly on the other hand with existing sewage water treatment method.
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 and Fig. 2 have described the situation that several drainage flow directions that may adopt are made inverse change.
Fig. 3 has illustrated novel method of the present invention superiority compared with prior art.
Noticeable change takes place in concentration and nitrogen content in time that flow to concentration of wastewater, sludge loading and the nitrogen of waste disposal plant.Low bacterial concentration can allow the basic substance metabolism a this changing conditions of limited range endoadaptation in the last step container of multistage flow system.
Core of the present invention is to allow in the multistage trickling drainage flow direction inverse change back and forth, and this drainage flow direction both can also can change in indivedual what container in total system.
Fig. 1 represents a kind of schema of the multistage submerged trickling filters of being made up of Pyatyi.In the A operating mode, pending sewage flows to container 5 with direction shown in the arrow 6 from container 1.Experiencing the B operating mode for some time of after, the sewage to be clean reversed flow of doing as shown in arrow 7.In other words, the water inlet of multistage submerged trickling filters and water outlet are with the best rhythm do the sort of variation as shown in Figure 1 of this device run duration.
Therefore, the container that concentration of wastewater is low when the A operating mode (as container 4 and 5) can obtain sufficiently high matrix supply when the B operating mode.In the later moment, when being in the A operating mode again, container 1 and 2 also becomes this situation.
If the load of waste disposal plant comparatively speaking relatively evenly, then the alternately variation from the A operating mode to the B operating mode can periodically be carried out.But this control also can be carried out according to load condition at that time, and this is applicable to the running condition of pulse mode.
In the described embodiment of Fig. 2, the drainage flow direction only changes in the container that those matrix limits begin to work.Which rank of container to begin to change flow direction from, the sewage quality situation that this should meet at that time to be expected actually.The drainage flow direction in the end changes in the secondary containers 4 and 5 among Fig. 2.That is to say that in the A operating mode, pending sewage still flows along direction shown in the arrow 6; And in the B operating mode, the drainage flow direction in the container 1 to 3 remains unchanged (direction shown in the arrow 6), and after passing through container 3, sewage changes glide path, crosses container 4 and 5 along arrow 7 direction reverse direction flow.In this case, just as described, the sewage that has purified flows out from its outlet after the container 4 of flowing through.
The Pyatyi container is all arranged among the embodiment of Fig. 1 and Fig. 2.But the present invention is not limited to this embodiment situation, and this novel method can be applicable to have secondary or the above multistage container situation of secondary.
Compare with the thick-and-thin method of flow direction, novel method has unusual effect.Its comparative result is clearly shown among Fig. 3.
Fig. 3 contrasts the average ammonium lifting capacity of unit surface under the maximum nitrated rate of two kinds of methods.As can be seen, can obtain higher basic substance accretion rate corresponding to lower lifting capacity.Can draw such conclusion thus: compare with traditional method, under same supply surface, can reach displacement mass preferably, perhaps under the situation of given purification efficiency, can use less reactor according to method of the present invention.
Claims (4)
1, the method that adopts the multistage submerged trickling filters be suitable for the nitride oxidation that sewage is carried out a biological disposal upon is characterized in that: make the flow direction of the sewage by this submerged trickling filters make inverse change every now and then.
2, according to the described biological method for treating waste water of claim 1, it is characterized in that: above-mentioned drainage flow direction is periodically to make inverse change.
3, according to claim 1 or 2 described biological method for treating waste water, it is characterized in that: the drainage flow direction is only made inverse change in indivedual what container of multistage submerged trickling filters.
4, according to the described biological method for treating waste water of claim 3, it is characterized in that: the drainage flow direction is only made inverse change being arranged in what last container of multistage submerged trickling filters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87108241A CN1033371A (en) | 1987-11-28 | 1987-11-28 | The method of sewage being carried out a biological disposal upon with multistage submerged trickling filters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87108241A CN1033371A (en) | 1987-11-28 | 1987-11-28 | The method of sewage being carried out a biological disposal upon with multistage submerged trickling filters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1033371A true CN1033371A (en) | 1989-06-14 |
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ID=4816432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87108241A Pending CN1033371A (en) | 1987-11-28 | 1987-11-28 | The method of sewage being carried out a biological disposal upon with multistage submerged trickling filters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1033371A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106731777A (en) * | 2017-02-17 | 2017-05-31 | 盐城工学院 | Bio-trickling tower apparatus and bio-trickling Tower System |
-
1987
- 1987-11-28 CN CN87108241A patent/CN1033371A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106731777A (en) * | 2017-02-17 | 2017-05-31 | 盐城工学院 | Bio-trickling tower apparatus and bio-trickling Tower System |
| CN106731777B (en) * | 2017-02-17 | 2022-08-02 | 盐城工学院 | Bio-trickling filter device and bio-trickling filter system |
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| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |